JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M9 x 1 FMH FLH FHH S&E A&NF M&D the end mill reaches deep

the end mill reaches deep grooves and tall pockets with stability

while the combination of left-hand spiral flute and right-hand cutting promotes orderly chip evacuation and a clean finish on prepared holes

and supports reliable performance in mid-range bore finishing tasks

The combination of a robust carbide construction

JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M9 x 1 FMH FLH FHH S&E A&NF M&D the end mill reaches deepThe JBO Thread Ring Gauge (GO) Metric Fine is a precision inspection tool designed to quickly verify external thread diameters on metric fine threads. Sized for M9 x 1 left hand threads, it helps engineers, machinists, and quality teams confirm parts meet exact specifications with a simple pass fail check. Crafted from hardened steel, this gauge is built for durability in demanding workshop environments. Accurate GO verification for M9 x 1 left hand